问题解答栏是本刊多年来坚持设置的栏目,在几位编辑的辛勤工作下,赢得不少读者的喜爱.在新世纪中,我们希望问题解答栏有新的面貌.近几年来,我国数学问题的题型有了很大变化,情景题、应用题、开放题等多种题型正在迅速普及,因此,我们决定多刊登一些新型的题目.以服务于广大读者.期望关心本栏目的读者寄来更好、更新、更有启发价值的好题. The Question and Answer column is a column that the Journal has been insisting on for many years. Under the hard work of several editors, it has won the favor of many readers. In the new century, we hope the question and answer column will have a new look. In recent years, our mathematics The question types have changed a lot. Scenario questions, applied questions, open questions and other types of questions are rapidly gaining popularity. Therefore, we have decided to publish some new topics to serve our readers. We hope readers concerned about the readers of this column Send a better, updated, more inspiring good question.